mu.Lock()
					offlineEndpoints = append(offlineEndpoints, fmt.Errorf("%s is unreachable: %w", clnt, grid.ErrDisconnected))
					mu.Unlock()
					return
				}

				ctx, cancel := context.WithTimeout(ctx, 2*time.Second)
				defer cancel()

				err := clnt.Verify(ctx, srcCfg)
				mu.Lock()
				if err != nil {
					bootstrapTraceMsg(fmt.Sprintf("bootstrapVerify: %v, endpoint: %s", err, clnt))

        };

    future = service.schedule(runnable, 5, MINUTES);
    future.cancel(true);
    assertTrue(future.isCancelled());
    delegateFuture = (ScheduledFuture<?>) delegateQueue.element();
    assertTrue(delegateFuture.isCancelled());

    delegateQueue.clear();

    future = service.scheduleAtFixedRate(runnable, 5, 5, MINUTES);
    future.cancel(true);
    assertTrue(future.isCancelled());

    last: Boolean,
  ): Boolean

  /** Indicates the reason why this stream was canceled. */
  fun onReset(
    streamId: Int,
    errorCode: ErrorCode,
  )

  companion object {
    @JvmField val CANCEL: PushObserver = PushObserverCancel()

    private class PushObserverCancel : PushObserver {
      override fun onRequest(
        streamId: Int,
        requestHeaders: List<Header>,
      ): Boolean = true

      valueAndCloser.closeAsync();
    }
    super.waitUntilClosed(closingFuture);
  }

  @Override
  void cancelFinalStepAndWait(ClosingFuture<TestCloseable> closingFuture) {
    assertThat(closingFuture.cancel(false)).isTrue();
    ValueAndCloser<?> unused = finishToValueAndCloser(closingFuture);
    waitUntilClosed(closingFuture);
    futureCancelled.countDown();
  }

    long r = 0;
    List<Facade<Integer>> list = new ArrayList<>(reps);
    for (int i = 0; i < reps; i++) {
      Facade<Integer> localFuture = impl.newFacade();
      list.add(localFuture);
      localFuture.cancel(false);
    }
    for (int i = 0; i < reps; i++) {
      Facade<Integer> facade = list.get(i);
      try {
        facade.get();
        r++;
      } catch (CancellationException e) {
        r += 2;
      }

  /*
   * We access this field racily but safely. For discussion of a similar situation, see the comments
   * on the fields of TimeoutFuture. This field is slightly different from the fields discussed
   * there: cancel() never reads this field, only writes to it. That makes the race here completely
   * harmless, rather than just 99.99% harmless.
   */
  @LazyInit private @Nullable List<@Nullable Present<V>> values;

          """
          |data: hey
          |
          |
          """.trimMargin(),
        ).setHeader("content-type", "text/event-stream")
        .build(),
    )
    listener.enqueueCancel() // Will cancel in onOpen().
    val request = Request.Builder().url(server.url("/")).build()
    val response = client.newCall(request).execute()
    processResponse(response, listener)
    listener.assertOpen()

			nil, nil),
		prometheus.GaugeValue,
		float64(nodesDown),
	)
}

// collects healing specific metrics for MinIO instance in Prometheus specific format
// and sends to given channel
func healingMetricsPrometheus(ch chan<- prometheus.Metric) {
	bgSeq, exists := globalBackgroundHealState.getHealSequenceByToken(bgHealingUUID)
	if !exists {
		return
	}

	var dur time.Duration

    apply {
      actions += { stream ->
        if (!stream.source.exhausted()) throw AssertionError("expected exhausted")
      }
    }

  fun cancelStream() =
    apply {
      actions += { stream -> stream.cancel() }
    }

  fun requestIOException() =
    apply {
      actions += { stream ->
        try {
          stream.source.exhausted()
          throw AssertionError("expected IOException")

        return (ServerMessageBlock2Request<?>) super.getNext();
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.util.transport.Request#isCancel()
     */
    @Override
    public boolean isCancel() {
        return false;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockRequest#isResponseAsync()
     */
    @Override